Profile: Alfatek Electronics specializes in providing CCTV camera and internet device. Our products include CCTV camera, DVR surveillance system, sim modem, GSM modem, GPS modem, GSM antenna, GPS sim module and DVR surveillance system. Our dome CCTV camera is shock resistant. It covers the maximum focus area and gives a clean and clear vision. It also ensures the protection of self, family members and livestock. Our GSM sim tray is a surface mount socket used to hold a SIM card. The holding tray can be pushed to eject and takeout the SIM.